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MCP4725 датащи(PDF) 20 Page - Microchip Technology

номер детали MCP4725
подробное описание детали  12-Bit Digital-to-Analog Converter with EEPROM Memory in SOT-23-6
PDF  42 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP4725 датащи(HTML) 20 Page - Microchip Technology

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MCP4725
DS22039C-page 20
© 2007 Microchip Technology Inc.
6.2
READ COMMAND
If the R/W bit is set to a logic “high”, then the device
outputs on SDA pin, the DAC register and EEPROM
data. Figure 6-3 shows an example of reading the
register and EEPROM data. The 2nd byte in Figure 6-3
indicates the current condition of the device operation.
The RDY/BSY bit indicates EEPROM writing status.
The RDY/BSY bit stays low during EEPROM writng
and high when the writing is completed..
FIGURE 6-3:
Read Command and Output Data Format.
1st byte
ACK
(MCP4725)
2nd byte
3rd byte
ACK
(Master)
4th byte
D3 D2
D0
D1
1
1
0
0
A2 A1 A0
1
RDY/
XX X PD1 PD0 X
XX X X
D11 D10 D9 D8 D7 D6 D5 D4
Start Bit
Device Code Address Bits
R/W
5th byte
6th byte
D7 D6
D4
D5
D3 D2 D1 D0
X PD1 PD0 X D11 D10 D9 D8
Stop
Bit
Note 1: Bytes 2 - 6 are repeated in repeat bytes after byte 6.
2: X is don’t care bit.
Read Command
DAC register Data (12 bits)
in DAC Register
Current Settings
See
Note 2
EEPROM Write Status Indicate Bit
(1: Completed, 0: Incomplete)
BSY
EEPROM Data
POR
ACK
(Master)
ACK
(Master)



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